<?php
namespace App\GraphQL\Queries\Group;

use App\Models\FactoryDevice;
use GraphQL\Type\Definition\ResolveInfo;
use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;

class QueryFactoryDevice
{

    /**
     * Return a value for the field.
     *
     * @param null $rootValue
     *            Usually contains the result returned from the parent field. In this case, it is always `null`.
     * @param mixed[] $args
     *            The arguments that were passed into the field.
     * @param \Nuwave\Lighthouse\Support\Contracts\GraphQLContext $context
     *            Arbitrary data that is shared between all fields of a single query.
     * @param \GraphQL\Type\Definition\ResolveInfo $resolveInfo
     *            Information about the query itself, such as the execution state, the field name, path to the field from the root, and more.
     * @return mixed
     */
    public function __invoke($rootValue, array $args, GraphQLContext $context, ResolveInfo $resolveInfo)
    {
        $item = FactoryDevice::find($args['id']);
        if (! $item) {
            throw new \Exception('设备不存在!');
        }
        return $item;
    }

    public function echo($rootValue, array $args, GraphQLContext $context, ResolveInfo $resolveInfo)
    {
        // TODO implement the resolver
        return 'hh';
    }
}
